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package org.freedesktop.gstreamer.tutorials.tutorial_3;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.TextView;
import android.widget.Toast;
import org.freedesktop.gstreamer.GStreamer;
public class Tutorial3 extends Activity implements SurfaceHolder.Callback {
private native void nativeInit(); // Initialize native code, build pipeline, etc
private native void nativeFinalize(); // Destroy pipeline and shutdown native code
private native void nativePlay(); // Set pipeline to PLAYING
private native void nativePause(); // Set pipeline to PAUSED
private static native boolean nativeClassInit(); // Initialize native class: cache Method IDs for callbacks
private native void nativeSurfaceInit(Object surface);
private native void nativeSurfaceFinalize();
private long native_custom_data; // Native code will use this to keep private data
private boolean is_playing_desired; // Whether the user asked to go to PLAYING
// Called when the activity is first created.
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// Initialize GStreamer and warn if it fails
try {
GStreamer.init(this);
} catch (Exception e) {
Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
finish();
return;
}
setContentView(R.layout.main);
ImageButton play = (ImageButton) this.findViewById(R.id.button_play);
play.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
is_playing_desired = true;
nativePlay();
}
});
ImageButton pause = (ImageButton) this.findViewById(R.id.button_stop);
pause.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
is_playing_desired = false;
nativePause();
}
});
SurfaceView sv = (SurfaceView) this.findViewById(R.id.surface_video);
SurfaceHolder sh = sv.getHolder();
sh.addCallback(this);
if (savedInstanceState != null) {
is_playing_desired = savedInstanceState.getBoolean("playing");
Log.i ("GStreamer", "Activity created. Saved state is playing:" + is_playing_desired);
} else {
is_playing_desired = false;
Log.i ("GStreamer", "Activity created. There is no saved state, playing: false");
}
// Start with disabled buttons, until native code is initialized
this.findViewById(R.id.button_play).setEnabled(false);
this.findViewById(R.id.button_stop).setEnabled(false);
nativeInit();
}
protected void onSaveInstanceState (Bundle outState) {
Log.d ("GStreamer", "Saving state, playing:" + is_playing_desired);
outState.putBoolean("playing", is_playing_desired);
}
protected void onDestroy() {
nativeFinalize();
super.onDestroy();
}
// Called from native code. This sets the content of the TextView from the UI thread.
private void setMessage(final String message) {
final TextView tv = (TextView) this.findViewById(R.id.textview_message);
runOnUiThread (new Runnable() {
public void run() {
tv.setText(message);
}
});
}
// Called from native code. Native code calls this once it has created its pipeline and
// the main loop is running, so it is ready to accept commands.
private void onGStreamerInitialized () {
Log.i ("GStreamer", "Gst initialized. Restoring state, playing:" + is_playing_desired);
// Restore previous playing state
if (is_playing_desired) {
nativePlay();
} else {
nativePause();
}
// Re-enable buttons, now that GStreamer is initialized
final Activity activity = this;
runOnUiThread(new Runnable() {
public void run() {
activity.findViewById(R.id.button_play).setEnabled(true);
activity.findViewById(R.id.button_stop).setEnabled(true);
}
});
}
static {
System.loadLibrary("gstreamer_android");
System.loadLibrary("tutorial-3");
nativeClassInit();
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
Log.d("GStreamer", "Surface changed to format " + format + " width "
+ width + " height " + height);
nativeSurfaceInit (holder.getSurface());
}
public void surfaceCreated(SurfaceHolder holder) {
Log.d("GStreamer", "Surface created: " + holder.getSurface());
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.d("GStreamer", "Surface destroyed");
nativeSurfaceFinalize ();
}
}
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